Paygent is the first dedicated payment infrastructure protocol enabling AI agents to autonomously transact on-chain. Built on Robinhood Chain, PAYGENT powers a comprehensive financial layer for machine-driven commerce through programmable virtual cards, policy-enforced spending controls, and real-time transaction auditing. The protocol addresses the critical gap in autonomous AI workflows—secure, controlled payment capabilities—by providing instant card issuance, merchant restrictions, spending limits, and MCP-compatible APIs. PAYGENT tokens facilitate transaction fees, governance over protocol parameters, and access to enterprise-grade agent payment features. As AI agents transition from reasoning to execution, Paygent establishes the foundational rails for trustless, auditable, and policy-compliant AI commerce across Web3 and traditional payment networks.